Graduating-machine



G. L. TAYLOR.

GRADUATING MACHINE.

APPLICATION FILED MAR. 10. 1920.

Patented Oct. 18, 1921.

2 8HEETS-SHEET 1.

7.x. [NVENTQR mhnm i6 53;

G. L TAYLOR.

GRADUATING MACHINE.

APPLlCATlON FILED MAR-10.1920.

1,393,923, Patented 001;. 18, 1921.

2 SHEETSYSHEET 2. 15- E M I 7 WIT? fi ATTORNEYS.

UNITED STATES PATENT OFFICE.

GRADUATING-MACHINE.

' Specification of Letters Patent.

v Patented Oct. 18, 1921.

Application filed March 10, 1920. Serial No. 364,619.

T 0 all whom-it may concern:

Be it known that I, GEORGE L. TAYLOR, a citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Graduating-Machines, of which the followingis a specification;

The present invention relates to graduating machines and it has for an object to provide in connection with a support for the work, a plurality of marking devices movable to operate on the work on such support and adjustably arranged with reference to each other for the purpose of varying the distances between such devices. Another .object of the invention is to provide a graduat ing machine of simple construction and operation. j

To these and other ends the invention consists of certain parts and combinations of parts, all of which will be hereinafter described, the novel features being pointed out in the appended claims.

In the drawings:

Figure 1 is a plan view of a graduating machine constructed in accordance with this invention;

Fig. 2 shows such tion; I

Fig. 3 is a fragmentary vertical section through the marking mechanism and the work support; 1

Fig. f is a section on the line H, Fig. 3;

Fig. 5 is a section on the line 55, Fig. 3;

Figs. 6, 7 and 8 are" fragmentary views showing the manner in which the marking machine in side elevadevices or tools "cooperate with the work piece Fig. 9 1s a fragmentary view of a thermometer on whichthe machine operates;

Fig. 10 is a fragmentary vertical section through themarking mechanism of another embodiment of the marking device; and

Fig. 11 is a fragmentary horizontal section through the embodiment shown in Fig.10. r

In the embodiment of the invention illustrated in Figs. 1 to 9,'the marking mecha nism comprises a plurality of marking 'devices which are preferably in the form of plates 1 each having a downwardly turned end 2 provided -with a marking portion. These plates are adjustable relatively to each other so as to vary the distances between the marking points. In this instance, this adjustment is secured by mounting the plates upon a rod 3 between two projections 4L arranged above a guide surface 5 which cooperates with the lower edges of the plates or marking devices. Relative movement between the plates or marking devices is effected, in this instance, by introducing between such plates or marking devices, adjusting devices which in this instanceeomprise another set of plates 6 projecting forwardly from the carriage 7 which operates in rear of the marking devices. Both of the sets of plates have their cooperating portions beveled so that the adjusting devices 6 wedge themselves in between the marking devices. The adjusting devices are guided on the carriage 7 preferably by providing said carriage with two projections 8 connected by a rod 9, the plates 6 having alined perforations through which the rod extends so that such plates may move longitudinally of the rod. The carriage 7 has a guide surface 7 cooperating with the under sides of the plates to support them in one plane. One

of the plates 1' preferably has a projecting portion 10 which extends into the guide surface 5 so as to prevent bothsets of plates from moving as a whole or bodily on the rods 3 and 9 as shown in Fig. 5. WVith the purpose of'h'olding the guide plates and the adjusting plates in yielding cooperative relation, a yieldingmeans acts on both of said sets of plates and comprises in this instance, a rod 11 projected through slots 12 formed in the cooperating portions of the two sets of plates, said rod projecting at'its opposite ends beyond the two sets of plates and having helical springs 13 on its projecting ends and also thumb nuts 14 for the purpose of increasing or decreasing the compression of the springs 18, the rod 11 being screw threaded at its ends to permit the adjustments of the thumb nuts 14. Movement of the adjusting devices 6 to vary the distancesbetween the marking devices may be effected by any suitable means such as an adjusting screw 16 which is mounted-to turn at 17 in a frame 18 and 18 which also supports the rod 3 in a fixed relation to such frame 18. By this arrangement, the turning of the nutjlo will effect the longitudinal movement of the plates 6 between the plates 1 and in this way the marking portions 2 of said plates will be moved relatively to each other so as to space oted U shaped silpportingframe formed by-- them equidistantly for any adjusted positions. i

This particular embodiment of the machine is designed for marking devices or graduations on the thermometers, one 50f which is indicated at 20. In graduating thermometers it is customary to find two definite points on the thermometer tube and to graduate the tube with reference to such two points, the thermometer being first coated as at 21 with a wax or other readily efiaceable coating and the coating then being scratched ormarked to remove the same so that an acid may reach the glass thermom- 'eter tube at the removed portion and thus form lines in the glass tube. The main division lines are longer than the subdivisions and to this end the marking portions which scratch the wax for the main division are formed diiferently from the marking portions which scratch the wax for'the subdivisions. The marking devices forming the main divisions have two prongs 2 arranged in spaced relation while the marking dev ces forming the sub-divisions have but one prong 2 so that the marklng devices 2 will make a longermark than the marking devices 2 forthe same movement in the tw marking devices.

The supporting means for the thermometer may be of any form. 'In this instance" it comprises two arms 22 pivoted ontwo posts 23 about a common axis 24 and having a connecting member 25 between them. The upper surfaces of these arms are recessed or notched at 26" inalinement with each other so that the thermometer tube 20 may be supported in a horizontal position. In order to maintain the tube in these recesses, two

fixed abutments 271' may be provided onposts 28 and the thermometer tube may be held against the under side of these abutments by a spring 28 whichacts on the pivthe arms 22 and the connecting member 25.

The posts 23 and 28 are preferably support ed on a carriage 29 which is guidedbeneath straps 30 on a table 31 so that said supporting frame 29 may be adjusted in the direction of the longitudinal axis of the ther-.

mom'eter' tube. This adjustment may be obtained by mounting a screw 32 onthe table 31 and engaging said screw with the carriage 29' so that upon the rotation of the screw32,

the carriage :with the thermometer support and the thermometer. tube thereon will be .moved in the direction of the longitudinal axis of the thermometer tube.

With the purpose inview of moving the marking devices transversely of the thermometer tube to effect the scratching of the tends to'move the slide 34 in opposition to the cam 36. Pivotal movement of the frame 18 on the slide 34 may be obtained by an arm 41 which extends from the frame 18 under the table 31 andhas a portion 42 lying above a second cam 43 alsoarranged on the shaft 37 The reciprocation and the rocking of the frame 18 on the pivot 33 is so timed that when the shaft 37 is turned through the hand wheel 44 or other means, the frame 18 will be moved to swing the marking devices 2 downwardly into engagement with the thermometer tube and thereaftertheslide 34 will be moved to carry the marking devices a short distance in engagement with the thermometer tube, thus causing the marking devices'to remove portions of the wax coatingfrom the tube.

In the use of the machine, the thermome ter is first tested to find two definite points, say for instance, zero and one hundred degrees. The thermometeris than placedupon the arms 22 by moving upwardly on the cross piece 25 so as to carry the recesses away from the fixed abutments 27. After the thermometer has been properly placed in the recesses it is permitted to-be brought into engagement with the abutments 27 The carriage 29 and the wedgingplatesj6 are then adjusted so that the desired two of they marking devices .will exactly coincide with the twodefinite marks on the thermometer tube. After thissadjustment has obtained, the-shaft 37, is rotated to bring the marking devices into contact with the tube and over theiface thereof a distance sufficient tos c ratch the divisions in the waxed surface. 'Afte r this, the markingdevices move out of contact with the thermometer tubeto their original positions. Should the thermometer tube-be more than the normalthickness, the work support formed by the arms 22 and connecting member 25 will yield to prevent injury to the tube. V j

In the embodiment of the invention shown in Figs. 10 and 11,-theparts are the'same except that the construction of the marking devices and adjusting devices are of. differ: ent construction.

jection 45 which operates in a-groove 46 vices or'plates 6 are provided with alined openings through which the rod 9Fextends,

The marking devices 1* are supported on therod 3" and on the under I side of one of them'thereis provided a pro formed in the frame 18". The adjusting de- I V said rod 9 being supported on a carriage 7" adjustable through the screw 16 as in the other embodiment. The adjusting devices are also provided with slots 12* which surround the rod 3 so that the rod 11 of the other embodiment will be eliminated. Springs 18 surround the rod 3* at opposite sides of the sets of adjusting and marking devices and produce cooperation between the wedged faces of such devices. This arrangement provides for a more simplified construction than that shown in the other embodiment as it eliminates the rod 11 and at the same time the free ends of the wedging devices are guided on the frame 18 so that vertical movement of the adjusting devices is prevented.

What I claim as my invention and desire to secure by Letters Patent is:

1. In a graduating machine, the combination with a support for the article to be graduated, of a set of marking tools for cooperation with the article on the support, some of which have one marking point and others of which have two marking points arranged in a line with the line of relative movement between the tool and the support, and mechanism for effecting a relative movement between the support and the marking tools to cause the tools to make marks on the article on the support.

2. In a graduating machine, the combination with a set of marking tools, some of which have one marking point and others of which have two marking points arranged in a line with the line of relative movement between the tool and the support, of a support for holding an article to be marked, and mechanism for imparting to the tools a movement which will cause the tools to mark on a device arranged on the support.

3. In a graduating machine, the combination with a support for an article to be marked, a plurality of relatively adjustable marking tools, a frame on which said tools are supported, a reciprocatory carriage on which said frame is pivotally mounted, and mechanism for reciprocating the carriage and pivoting the frame on the carriage to cause the tools to mark on the article on the support.

4. In a gradua ing machine, the combination with a support for the article to be graduated, a plurality of relatively adjustable marking tools, a frame on which said tools are mounted, a reciprocatory carriage on which said frame is pivotally mounted, and a cam shaft having two cams thereon, one of which effects the reciprocation of the carriage and the other of which effects the pivotal movement of the frame on the carriage.

5. In a graduating machine, the combination with a plurality of relatively adjustable marking tools arranged in a line, of

mechanism for moving said tools transversely of said line, and a support for the article to be marked adjustable in the direction of said line of the marking points of the tools.

6. A graduating machine comprising a main frame, a shaft supported on said frame and having two cams thereon, a carriage mounted to reciprocate on said frame and to be moved through one of said cams, a frame pivotally mounted on said carriage and movable through the other of said cams, a plurality of marking tools carried by said pivoted frame and having their marking points arranged in a line, and a support for the work adjustable on the main frame in the direction of the line of the marking points of the tools.

7. In a graduating machine, the combination with a plurality of relatively adjustable marking devices, of a plurality of relatively adjustable devices arranged to operate between the marking devices for the purpose of effecting the relative movement between such marking devices, each of said devices being in the formof a rigid unitary structure having faces engaging simultaneously the opposed faces of the marking devices.

S. In a graduating machine, the combination with a plurality of marking devices relatively adjustable, and relatively adjustable wedges arranged to operate between the marking devices.

9. A graduating machine comprising a plurality of relatively adjustable marking devices, one of which is held against movement, and devices arranged to operate between said marking devices for effecting their relative adjustment, each of said devices being in the form of a rigid unitary structure having faces engaging the opposed faces of the marking devices.

10. A graduating ,machine comprising a guide, a plurality of relatively movable marking devices movable on the guide, one of said devices being held against movement with reference to the guide, and devices for operating between the marking devices for efiecting the relative adjustment of said marking devices, each of said devices being in the form of a rigid unitary structure having faces engaging the opposed faces of the marking devlces.

11. A. graduating machine comprising a plurality of relatively adjustable marking devices, a plurality of relatively adjustable rigid devices operating between said markingdevices to efiect the adjustment of said marking devices, and resilient means acting on both sets of devices.

12. A. graduating machine comprising two guides, one of which is adjustable relatively tothe other, a set of marking devices relatively adjustable on one of the guides, and

a set of rigid adjusting devices relatively adjustable onthe other guide and arranged to operate between the the first named guide to effect the relative adjustment between the marking devices.

13. A graduating machine comprising two guides, one of which is adjustable relatively to the other, a set of marking devices relatively adjustable on one of said guides, a set of rigid adjusting devices relatively adjustable on the other of said guides and arranged to operate between the marking devices, and resilient means for maintaining marking devices on r cooperation between the marking devices and the adjusting devices.

14. A graduating machine comprising two guides, one of which is adjustable relatively to the other, a set of marking devices relatively adjustable on one ofthe guides, one of said marking devices being held against movement on such guide, and a set of rigid adjusting devices relatively adj ustable' on the other guide and arranged to operate be tween themarking devices for efi'ecting the movement of such devices on their guide.

GEORGE L. TAYLOR. 

